Pemko 321CN36 36" 3' Door Bottom Sweep with Neoprene Clear Aluminum Finish

The 321CN36 door bottom sweep installs on the bottom of doors to seal gaps between the door and floor. This surface-mounted sweep prevents infiltration of moisture, fire, smoke, sound, and light through door bottoms. Pemko designed this sweep for buildings requiring weatherization and air infiltration control at door perimeters.

The sweep features a 0.938-inch neoprene extrusion housed in a 1-inch anodized aluminum casing. The neoprene creates a flexible seal against floor surfaces while the aluminum mounting plate provides structural support. Surface mounting allows installation without door modifications. This 36-inch length fits standard 3-foot door widths. The clear anodized finish matches most door hardware.

Fire-rated door assemblies require gasketing systems that maintain ratings during UL 10C positive pressure testing. Buildings with egress doors may also need weatherization to meet energy codes. For broader code context on building safety requirements, see NFPA 101 Life Safety Code guidance.

Material	Anodized Aluminum and Neoprene
Mounting	Surface Mount
Length	36 inches
Finish	Clear Anodized Aluminum
Warranty	5 Years Limited

This sweep meets UL 1784 air leakage testing, UL 10C positive pressure fire testing, ASTM E-283-04 air infiltration testing, and ANSI/BHMA A156.22 door gasketing standards.